component
STM32L071K8U3
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFQFPN-32(5x5). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.
← Commit history
README.mdadded+69@@ -0,0 +1,69 @@+# STM32L071K8U3++**STMicroelectronics** · Microcontrollers (MCU/MPU/SOC) · UFQFPN-32(5x5)++STM32L071K8U3 from STMicroelectronics, in a UFQFPN-32(5x5). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model, then checked against ST open pin data); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | PC14-OSC32_IN | input | 32 kHz oscillator input pin for RTC operation, 5V tolerant I/O with alternate functions for SPI, USART, LPTIM, TIM2, TIM3, EVENTOUT. |+| 2 | PC15-OSC32_OUT | output | 32 kHz oscillator output pin for RTC operation, standard 3.3V I/O with alternate functions for OSC32_OUT. |+| 3 | NRST | bidirectional | Bidirectional reset pin with embedded weak pull-up resistor for system reset control. |+| 4 | VSSA | power_in | Ground reference pin for analog circuits and ADC. |+| 5 | VDDA | power_in | Analog power supply pin (1.65V to 3.6V) for ADC and comparators. |+| 6 | PA0 | bidirectional | 5V-tolerant I/O pin on Port A with analog input ADC_IN0 and alternate functions for TIM2, USART2, COMP1. |+| 7 | PA1 | bidirectional | 5V-tolerant I/O pin on Port A with analog input ADC_IN1 and alternate functions for TIM2, TIM21, USART2, COMP1. |+| 8 | PA2 | bidirectional | 5V-tolerant I/O pin on Port A with analog input ADC_IN2 and alternate functions for TIM2, TIM21, USART2, LPUART1, COMP2. |+| 9 | PA3 | bidirectional | 5V-tolerant I/O pin on Port A with analog input ADC_IN3 and alternate functions for TIM2, TIM21, USART2, LPUART1, COMP2. |+| 10 | PA4 | bidirectional | Standard 3.3V I/O pin on Port A with analog input ADC_IN4 and alternate functions for SPI1, USART2, TIM22. |+| 11 | PA5 | bidirectional | Standard 3.3V I/O pin on Port A with analog input ADC_IN5 and alternate functions for SPI1, TIM2, COMP. |+| 12 | PA6 | bidirectional | 5V-tolerant I/O pin on Port A with analog input ADC_IN6 and alternate functions for SPI1, TIM3, TIM22, COMP1, LPUART1. |+| 13 | PA7 | bidirectional | 5V-tolerant I/O pin on Port A with analog input ADC_IN7 and alternate functions for SPI1, TIM3, TIM22, COMP2. |+| 14 | PB0 | bidirectional | 5V-tolerant I/O pin on Port B with analog input ADC_IN8 and alternate functions for TIM3, COMP, VREF_OUT. |+| 15 | PB1 | bidirectional | 5V-tolerant I/O pin on Port B with analog input ADC_IN9 and alternate functions for TIM3, LPUART1, COMP, VREF_OUT. |+| 16 | VSS | power_in | Ground reference pin for digital circuits and I/O. |+| 17 | VDD | power_in | Main power supply pin (1.65V to 3.6V) for digital circuits. |+| 18 | PA8 | bidirectional | 5V-tolerant Fast Mode+ capable I/O pin with alternate functions for MCO, USART1, I2C3. |+| 19 | PA9 | bidirectional | 5V-tolerant Fast Mode+ capable I/O pin with alternate functions for MCO, USART1, I2C1, I2C3. |+| 20 | PA10 | bidirectional | 5V-tolerant Fast Mode+ capable I/O pin with alternate functions for USART1, I2C1. |+| 21 | PA11 | bidirectional | 5V-tolerant I/O pin supplied by VDDIO2 with alternate functions for SPI1, USART1, COMP1. |+| 22 | PA12 | bidirectional | 5V-tolerant I/O pin supplied by VDDIO2 with alternate functions for SPI1, USART1, COMP2. |+| 23 | PA13 | bidirectional | 5V-tolerant I/O pin with alternate functions for SWDIO debug, LPUART1 receiver. |+| 24 | VDDIO2 | power_in | Separate power supply pin (1.65V to 3.6V) for PA11 and PA12 I/O buffers. |+| 25 | PA14 | bidirectional | 5V-tolerant I/O pin with alternate functions for SWCLK debug, USART2, LPUART1. |+| 26 | PB4 | bidirectional | 5V-tolerant Fast Mode+ capable I/O pin with alternate functions for SPI1, TIM3, TIM22, USART1, USART5, I2C3, COMP2. |+| 27 | PB5 | bidirectional | 5V-tolerant I/O pin with alternate functions for SPI1, LPTIM1, I2C1, TIM3, TIM22, USART1, USART5, COMP2. |+| 28 | PB6 | bidirectional | 5V-tolerant Fast Mode+ capable I/O pin with alternate functions for USART1, I2C1, LPTIM1, COMP2. |+| 29 | PB7 | bidirectional | 5V-tolerant Fast Mode+ capable I/O pin with alternate functions for USART1, I2C1, LPTIM1, USART4, COMP2, VREF_PVD_IN. |+| 30 | BOOT0 | input | Dedicated boot mode selection pin for choosing between boot from main flash memory or system bootloader. |+| 31 | VSS | power_in | Ground reference pin for digital circuits and I/O. |+| 32 | VDD | power_in | Main power supply pin (1.65V to 3.6V) for digital circuits. |+| 33 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | UFQFPN-32(5x5) |+| Category | Embedded Processors & Controllers |+| Pins | 33 |++## CAD (KiCad official)++- Symbol: `STM32L071K8U3`+- Footprint: `Package_DFN_QFN:UFQFPN-32-1EP_5x5mm_P0.5mm_EP3.5x3.5mm`+- 3D model: UFQFPN-32(5x5) (KiCad packages3D, STEP)+- 3D model files: `stm32l071k8u3-etched.step` / `stm32l071k8u3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stm32l071k8u3.step` / `stm32l071k8u3.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588923341239963648) (148 pp, sha256 `f413c7ce36b98e6c`, retrieved 2026-10-07, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/stm32l071k8u3-datasheet.pdf)
page.jsonadded+351@@ -0,0 +1,351 @@+{+ "slug": "stm32l071k8u3",+ "version": "0.1.0",+ "type": "component",+ "description": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFQFPN-32(5x5). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "embedded processors & controllers",+ "stm32l071k8u3",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "stm32l071k8u3.kicad_sym",+ "stm32l071k8u3.kicad_mod",+ "stm32l071k8u3.glb",+ "stm32l071k8u3.step",+ "stm32l071k8u3.lbr",+ "docs/hero.png",+ "docs/stm32l071k8u3-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "stm32l071k8u3-hero.glb",+ "stm32l071k8u3-hero.overlay.json"+ ],+ "component": {+ "mpn": "STM32L071K8U3",+ "manufacturer": "STMicroelectronics",+ "package": "UFQFPN-32(5x5)",+ "pin_count": 33,+ "category": "Embedded Processors & Controllers",+ "subcategory": "Microcontrollers (MCU/MPU/SOC)",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588923341239963648",+ "parts": {+ "symbol": "stm32l071k8u3.kicad_sym",+ "footprint": "stm32l071k8u3.kicad_mod",+ "model_3d": "stm32l071k8u3-hero.glb",+ "model_3d_plain": "stm32l071k8u3.glb",+ "model_3d_step": "stm32l071k8u3-etched.step",+ "model_3d_step_plain": "stm32l071k8u3.step",+ "lbr": "stm32l071k8u3.lbr"+ },+ "distributor_links": {+ "lcsc": "C1339777",+ "digikey": "497-16821-ND",+ "mouser": "511-STM32L071K8U3"+ },+ "distributor_check": {+ "checked_at": "2026-10-07T08:52:16Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "497-16821-ND",+ "status": "found"+ },+ "mouser": {+ "pn": "511-STM32L071K8U3",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "PC14-OSC32_IN",+ "type": "input",+ "description": "32 kHz oscillator input pin for RTC operation, 5V tolerant I/O with alternate functions for SPI, USART, LPTIM, TIM2, TIM3, EVENTOUT."+ },+ {+ "number": "2",+ "name": "PC15-OSC32_OUT",+ "type": "output",+ "description": "32 kHz oscillator output pin for RTC operation, standard 3.3V I/O with alternate functions for OSC32_OUT."+ },+ {+ "number": "3",+ "name": "NRST",+ "type": "bidirectional",+ "description": "Bidirectional reset pin with embedded weak pull-up resistor for system reset control."+ },+ {+ "number": "4",+ "name": "VSSA",+ "type": "power_in",+ "description": "Ground reference pin for analog circuits and ADC."+ },+ {+ "number": "5",+ "name": "VDDA",+ "type": "power_in",+ "description": "Analog power supply pin (1.65V to 3.6V) for ADC and comparators."+ },+ {+ "number": "6",+ "name": "PA0",+ "type": "bidirectional",+ "description": "5V-tolerant I/O pin on Port A with analog input ADC_IN0 and alternate functions for TIM2, USART2, COMP1."+ },+ {+ "number": "7",+ "name": "PA1",+ "type": "bidirectional",+ "description": "5V-tolerant I/O pin on Port A with analog input ADC_IN1 and alternate functions for TIM2, TIM21, USART2, COMP1."+ },+ {+ "number": "8",+ "name": "PA2",+ "type": "bidirectional",+ "description": "5V-tolerant I/O pin on Port A with analog input ADC_IN2 and alternate functions for TIM2, TIM21, USART2, LPUART1, COMP2."+ },+ {+ "number": "9",+ "name": "PA3",+ "type": "bidirectional",+ "description": "5V-tolerant I/O pin on Port A with analog input ADC_IN3 and alternate functions for TIM2, TIM21, USART2, LPUART1, COMP2."+ },+ {+ "number": "10",+ "name": "PA4",+ "type": "bidirectional",+ "description": "Standard 3.3V I/O pin on Port A with analog input ADC_IN4 and alternate functions for SPI1, USART2, TIM22."+ },+ {+ "number": "11",+ "name": "PA5",+ "type": "bidirectional",+ "description": "Standard 3.3V I/O pin on Port A with analog input ADC_IN5 and alternate functions for SPI1, TIM2, COMP."+ },+ {+ "number": "12",+ "name": "PA6",+ "type": "bidirectional",+ "description": "5V-tolerant I/O pin on Port A with analog input ADC_IN6 and alternate functions for SPI1, TIM3, TIM22, COMP1, LPUART1."+ },+ {+ "number": "13",+ "name": "PA7",+ "type": "bidirectional",+ "description": "5V-tolerant I/O pin on Port A with analog input ADC_IN7 and alternate functions for SPI1, TIM3, TIM22, COMP2."+ },+ {+ "number": "14",+ "name": "PB0",+ "type": "bidirectional",+ "description": "5V-tolerant I/O pin on Port B with analog input ADC_IN8 and alternate functions for TIM3, COMP, VREF_OUT."+ },+ {+ "number": "15",+ "name": "PB1",+ "type": "bidirectional",+ "description": "5V-tolerant I/O pin on Port B with analog input ADC_IN9 and alternate functions for TIM3, LPUART1, COMP, VREF_OUT."+ },+ {+ "number": "16",+ "name": "VSS",+ "type": "power_in",+ "description": "Ground reference pin for digital circuits and I/O."+ },+ {+ "number": "17",+ "name": "VDD",+ "type": "power_in",+ "description": "Main power supply pin (1.65V to 3.6V) for digital circuits."+ },+ {+ "number": "18",+ "name": "PA8",+ "type": "bidirectional",+ "description": "5V-tolerant Fast Mode+ capable I/O pin with alternate functions for MCO, USART1, I2C3."+ },+ {+ "number": "19",+ "name": "PA9",+ "type": "bidirectional",+ "description": "5V-tolerant Fast Mode+ capable I/O pin with alternate functions for MCO, USART1, I2C1, I2C3."+ },+ {+ "number": "20",+ "name": "PA10",+ "type": "bidirectional",+ "description": "5V-tolerant Fast Mode+ capable I/O pin with alternate functions for USART1, I2C1."+ },+ {+ "number": "21",+ "name": "PA11",+ "type": "bidirectional",+ "description": "5V-tolerant I/O pin supplied by VDDIO2 with alternate functions for SPI1, USART1, COMP1."+ },+ {+ "number": "22",+ "name": "PA12",+ "type": "bidirectional",+ "description": "5V-tolerant I/O pin supplied by VDDIO2 with alternate functions for SPI1, USART1, COMP2."+ },+ {+ "number": "23",+ "name": "PA13",+ "type": "bidirectional",+ "description": "5V-tolerant I/O pin with alternate functions for SWDIO debug, LPUART1 receiver."+ },+ {+ "number": "24",+ "name": "VDDIO2",+ "type": "power_in",+ "description": "Separate power supply pin (1.65V to 3.6V) for PA11 and PA12 I/O buffers."+ },+ {+ "number": "25",+ "name": "PA14",+ "type": "bidirectional",+ "description": "5V-tolerant I/O pin with alternate functions for SWCLK debug, USART2, LPUART1."+ },+ {+ "number": "26",+ "name": "PB4",+ "type": "bidirectional",+ "description": "5V-tolerant Fast Mode+ capable I/O pin with alternate functions for SPI1, TIM3, TIM22, USART1, USART5, I2C3, COMP2."+ },+ {+ "number": "27",+ "name": "PB5",+ "type": "bidirectional",+ "description": "5V-tolerant I/O pin with alternate functions for SPI1, LPTIM1, I2C1, TIM3, TIM22, USART1, USART5, COMP2."+ },+ {+ "number": "28",+ "name": "PB6",+ "type": "bidirectional",+ "description": "5V-tolerant Fast Mode+ capable I/O pin with alternate functions for USART1, I2C1, LPTIM1, COMP2."+ },+ {+ "number": "29",+ "name": "PB7",+ "type": "bidirectional",+ "description": "5V-tolerant Fast Mode+ capable I/O pin with alternate functions for USART1, I2C1, LPTIM1, USART4, COMP2, VREF_PVD_IN."+ },+ {+ "number": "30",+ "name": "BOOT0",+ "type": "input",+ "description": "Dedicated boot mode selection pin for choosing between boot from main flash memory or system bootloader."+ },+ {+ "number": "31",+ "name": "VSS",+ "type": "power_in",+ "description": "Ground reference pin for digital circuits and I/O."+ },+ {+ "number": "32",+ "name": "VDD",+ "type": "power_in",+ "description": "Main power supply pin (1.65V to 3.6V) for digital circuits."+ },+ {+ "number": "33",+ "name": "EP",+ "type": "passive",+ "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: PC14-OSC32_IN and PC15-OSC32_OUT pin types reflect GPIO-mode operation; when used as oscillator pins; PA11 and PA12 are supplied by separate VDDIO2 pin rather than main VDD; datasheet notes these as gre",+ "exposed pad 33 added from the footprint",+ "9/33 pins cited to the wrong page (name found elsewhere): ['17:VDD@p47', '18:PA8@p42', '19:PA9@p42', '20:PA10@p42']"+ ],+ "pages_sent": 74,+ "cost_usd": 0.498,+ "at": "2026-10-07T08:51:58"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588923341239963648",+ "pages": 148,+ "sha256": "f413c7ce36b98e6c",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 33,+ "described": 33,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "stm32l071k8u3.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 5,+ 5,+ 1.1+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "90af021df1253eae35bee4f4a4f9ba63bcf4a308f6e9f12d58f6e00181c23140",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "stm32l071k8u3-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 5,+ 5,+ 1.1+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "febdadf6edc688fc43662e1b8fa1906a711e870b5a086a499160946dd75dfef0",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}